look at the nasa portfolio today. it has biology, chemistry, engineers,aerospace mechanical engineers -- all of the stem fields are represented in the nasa portfolio. the healthy nasa helps that. it is a flywheel that society cap for innovation. airs programming about nonfiction authors. every weekday on c-span2. >> "washington journal" continues. look at are taking a the implementation of the affordable care act. we have had reporters from kaiser health. julie appleby is back to discuss the reasons why some and please have seen their plans canceled. this is a hot topic on capitol hill among some talking heads. let's discuss the mechanics at play here. why are some people receiving cancellation notices? who buyhese are people their own coverage because they do not get it through their jobs. these are folks who are small- business owners or self- employed. there are an increasing numbers of contract workers. they buy their own. many farmers by their own. it is estimated that five percent of americans by their own cover